84811898 has 4 divisors (see below), whose sum is σ = 127217850. Its totient is φ = 42405948.

The previous prime is 84811891. The next prime is 84811913. The reversal of 84811898 is 89811848.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 79085449 + 5726449 = 8893^2 + 2393^2 .

It is not an unprimeable number, because it can be changed into a prime (84811891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21202973 + ... + 21202976.

Almost surely, 2^84811898 is an apocalyptic number.

84811898 is a deficient number, since it is larger than the sum of its proper divisors (42405952).

84811898 is a wasteful number, since it uses less digits than its factorization.

84811898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42405951.

The product of its digits is 147456, while the sum is 47.

The square root of 84811898 is about 9209.3375440365. The cubic root of 84811898 is about 439.3583933784.

The spelling of 84811898 in words is "eighty-four million, eight hundred eleven thousand, eight hundred ninety-eight".